Magnetoresistive effect thin-film magnetic head with anti-ferromagnetic layer for magnetic domain control

a thin-film magnetic head and anti-ferromagnetic layer technology, applied in the field of thin-film magnetic heads, can solve the problem of not being able to apply to the free layer of the multi-layered structure a sufficient bias magnetic field for magnetic domain control, and achieve the effect of good linear response and no nois
US7692901B2Active Publication Date: 2010-04-06TDK CORPARATION
6 Cites 2 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
TDK CORPARATION
Publication Date
2010-04-06

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A thin-film magnetic head includes a lower electrode layer, an MR multi-layered structure, through which a current passes in a direction perpendicular to a lamination plane, stacked on the lower electrode layer, soft magnetic layers for magnetic domain control formed on both sides in a track width direction of the MR multi-layered structure, an anti-ferromagnetic layer for magnetic domain control continuously stacked on the MR multi-layered structure and the soft magnetic layers for magnetic domain control, the anti-ferromagnetic layer mutually exchanged-coupled to the soft magnetic layers for magnetic domain control, and an upper electrode layer stacked on the anti-ferromagnetic layer for magnetic domain control.
Need to check novelty before this filing date? Find Prior Art

Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a thin-film magnetic head with a magnetoresistive effect (MR) read head element for reading out a magnetic intensity in a magnetic recording medium or the like and outputting it as a signal, to a magnetic disk drive apparatus provided with the thin-film magnetic head, and to a manufacturing method of the thin-film magnetic head.

[0003] 2. Description of the Related Art

[0004] In order to satisfy the demand for higher recording density and downsizing in a hard disk drive (HDD) apparatus, higher sensitivity and larger output of a thin-film magnetic head are required. In accordance with the requirement, the performance improvement on a giant magnetoresistive effect (GMR) head with a GMR read head element has progressed. At the same time, a practical application of a tunnel magnetoresistive effect (TMR) head with a TMR read head element, in which the resistance change ratio is expected to more t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More